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rt2x00: Add autowake support for USB hardware

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The USB drivers don't support automatically waking up when in powersaving mode,
add a work object which will wakeup the device in time to receive the next beacon.
Based on that beacon, we either go back into powersaving mode, or we remain awake
to receive the buffered frames for our station.

Some part of the code, especially rt2x00lib_find_ie and rt2x00lib_rxdone_check_ps
are inspired on the code from carl9170.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ivo van Doorn
2011-04-30 17:18:18 +02:00
committed by John W. Linville
parent fdbc7b0a26
commit 1c0bcf89d8
6 changed files with 139 additions and 0 deletions
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1
drivers/net/wireless/rt2x00/rt2500usb.c
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@ -1797,6 +1797,7 @@ static int rt2500usb_probe_hw(struct rt2x00_dev *rt2x00dev)
__set_bit(REQUIRE_COPY_IV, &rt2x00dev->cap_flags);
}
__set_bit(REQUIRE_SW_SEQNO, &rt2x00dev->cap_flags);
__set_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags);
/*
* Set the rssi offset.